Installation for forcing viscous fluid into containers



June 23,'` 1931. T, E, H-LMES 1,811,752

INSTALLATION FOR FORCING VISCOUS FLUID INTO CONTAINERS NVEN r11-13R THUNAS EnMuNn HDLMEB ATTURNEY T. E. HGLMES June r23, 1931.

INSTALLATION FOR FORCING VISCOUS FLUID INTO CONTAINERS Filed Feb. 26,1930 Sheets-Sheet 2 NVEN TDR TH UMA E EDMUNB HULME E ATTURNEY June 23,1931. T. E. HOLMES 1,811,752

INSTALLATION FOR FORCING VISCOUS FLUID INTO CONTAINERS Filed Feb. 2e.1930 sheets-sheet 3 JNYEHTOR pump.

kfill f' are automatically opened and closed, respec- Patented June 23,1931 UNITED. STATES THOMAS EDIVIUND HOLMES, 0F GLASGOW, SCOTLANDINSTALLATION FOR FORCING VISCOUSV FLUID INTO CONTAINERS i Applicationrleclf February 26, 1930, Serial No.

The subject of this invention is an installation for forcing'a thicklviscous fluid into av receiver at a high pressure such that the viscousfluid cannot be pumped by an ordinary The invention consists in aninstallation for thls purpose comprising one `or more hydraullc forcingrams having a Vhydraulic cylinder or cylinders and, opposed thereto,

1a show,

a cylinder or cylinders for viscous fluid, power operated inlet anddelivery valves for the viscous fluid cylinder or for each viscous fluidcylinder, and means associated with the hydraulic cylinder or cylindersfor controlling said valves.

It is understood that when a plurality of forcing rams is provided theserams are arranged to operate out of phase.

In effect the hydraulic forcing ram or each such ram constitutes anintensifier, the fluid at the high pressure end of which is the viscousiluid in question.

The viscous fluid is delivered from a tank or other source of supply tothe forcing ram cylinder or cylinders during the return stroke of theforcing ram or rams effected by the power of drawback rams; suchdelivery being effected, for example, by gravity or by a pump. i Y

The return stroke of the forcing ram or of each ram is timed to commenceby continuously rotating timing means operatively connected to trip gearassociated with mechanically operated pressure and exhaust valves forthe low pressure cylinder of the `forcing ram. Thus, as the forcing ramattains the end-of its forward stroke, the trip gear is operated by thetiming means whereby the valves are operated so that the hydrauliccylinder, i. e., the low pressure cylinder, of the forcinfr ram isclosed to pressure and open to exhaust; concomitantly therewith thepower operated inlet and delivery valves interposed in the connectionfor viscous fluid tively. At the moment the return stroke is completed,the forcing ram cylinder being now full of viscous fluid supplied duringthe return stroke of the ram, thetrip gear is engaged by a tappet on theram whereby` a 431,554.,` and in Great Britain March 1, 1929.

weightd lever is released to effect reversal ofthe positions of thepressure and exhaust valves. Pressure water is now re-admitted to thehydraulic cylinder of and the positions'of the inlet and delivery valvesare reversed so that the forcing ram again commences to deliver viscousfluid into the receiver. l v i In the accompanying drawings Figs. 1 andmore or less diagrammatically, part of an vinstallation constructed inaccordance with the invention; Fig; 2 is a fragmentary diagrammaticlview; and Fig. 3 is an axial section through a working valve chest.

The installation` includes three hydraulic forcing rams of which oneonly is indicated generally at A (Fig. 1). Each forcing ram comprises adifferential ram proper presenting a highpressure end 1 operating on thel viscous fluid and working in a cylinder 2, and alow pressure end 3working in a cylinder 4V. Associated with the cylinder 4 are twocontinuously loaded drawback rams 5 working in cylinders Gand unitarywith rods 7 'attached to va crosshead `8 carried by the ram` 1, 3. s

Attached to the cylinder 2v is a valve chest 9 accommodating anon-return valve 10 adapted to control the inlet of viscous fluid to thecylinder 2 and a non-return delivery lvalve 11. The valve rod 12 of theinlet valve the forcing ramV A 10 is aligned with and connected to apiston rod 13 presenting a piston 13 operating in a cylinder 14 to theopposite ends of which are connected conduits 15, 16. The valve Yrod 17of the delivery valve 1l is aligned with presenting 23; 24 denotes avalved connection between the conduit 2O and a conduit 25 led to asource of water supply at a pressure of say 800 lbs. per square inch. Itwill be seen that pressure water entering the cylinder 14 by way of theconduit l5 acts on the full area presented by the piston 13 to close thevalve 10, and that pressure water entering the cylinder 14 by way of theconduit 16 acts on the difference in areas of the piston and piston rod13, 13, respectively, to open the valve 10. Pressure water entering thecylinder 19 by way of the conduit 21 acts on the full area presented bythe piston 18 to open the valve 11.y Pressure water entering thecylinder 19 by way of the conduit 20 acts on the difference in areas ofthe piston and piston rod 18, 18, respectively, to close the valve 11.

To ensure fluid tightness, the pistons 13, 18 are provided with packing28.

29 denotes a valve chest in which are operable a pressure valve 30, anexhaust valve 31, a non-return valve 32, and a spring-loaded valve 33 Aninlet branch 34 of the valve chest 29 is connected by way of a conduit35 to the discharge of hydraulic pumps indicated generally at B (Fig. 2)and having a working pressure of say 1500 lbs. per square inch.lnterposed at spaced points in the conduit 35 are two valves indicatedat 36. A chamber 37 of the valve chest 29 is connected by way of aconduit 38 to the hydraulic cylinder 4, said conduit 38 being providedwith a drain valve 39. A chamber 40 of the valve chest 29 is connectedto the end of the conduit 23 remote from the cylinders 14, 19. A chamber41 of the chest 29 is connected to an exhaust conduit 41 branching intoa conduit 42 leading from a water storage tank 43. The hydraulic pumps Bdraw from the conduit 42 by way of a conduit 44 fitted with a valve 45.46 denotes a valve interposed in the conduit 41. 47 denotes a by-passvalve interposed in a conduit 48 interconnecting the conduits 35, 44. 48denotes a conduit extending between the conduit 35 and a by-pass valvechest 49 and controlled bya needle valve 50. Accommodated in the valvechest 49 is a by-pass valve 51 adapted to control passage of water fromthe conduit 48 to the conduit 42 by way of a conduit 52 connecting saidconduit 42 to the valve chest 49. Integral with the valve 51 is aplunger 53 working in a chamber 54 connected by way of a conduit 55 anda branch conduit 55 to the chamber 40 of the valve chest 29, there beinginterposed in the branch conduit 55 a valve 57 denotes a pressure watersupply conduit leading from the conduit 35 tothe valve chests 29 of thehydraulic forcing rams A. Branching from the conduit 25 is a conduit 58connected to the cylinders 6 by way of conduits 59, with which isassociated a spring-urged relief valve 61. G2 denotes a valve interposedbetween the conduits 58 and 59. 63 denotes a drain valve fitted to theconduit 59.

'1' he valves 30-33 are urged towards their seats by helical compressionsprings 64-67, respectively. The lower ends of the stems 30', 31,respectively, of the valves 30, 31

present abutment faces 68, 69, respectively, engageable by set screws70, 71 adjustably mounted in a three-armed lever 72, 73, 74 fulcrumed at75 beneath the valve chest 29. The arm 73 of said lever is operativelyconnected by means of a link 76 to the upper end of a lever 77 pivotedbetween its ends at 78 in a bracket 79. Mounted on the lower end of thelever 77 is a follower 80 cooperating with a continuously rotating cam81 secured to a shaft 82 journalled for rotation in the bracket 79 andcarrying a worm wheel 83 meshing with a worm 84 on a shaft 85 driven byan electric motor 86 through the intermediary of gears 87, 88. The arm74 of the lever 72, 7 3, 74 carries an adjustable counterweight 89. Thelower end of the lever arm 72 presents al toe 90 engaging a slot 91 in ashaft 92 slidable horizontally in brackets 93, 94 and connected to thepiston 95 of a dashpot cylinder 96. 97 denotes a spring urged verticallymovable detent mounted in the bracket 94 and cooperating with a notchand groove in the shaft 92. The detent 97 engaged by the arm 98 of abell-crank lever 98, 99, -pivoted at 100 in the bracket 94. The leverarm 99 is operatively connected by means of a link 101 to one end of aJlever 102 pivoted between its Aends at 103. and operatively connected atits other end to a horizontally slidable tappet rod 104 engageable by atappet 105 carried by the crosshead 8.

ln operation, the return stroke of the ram 1, 3, i. e., the stroke inthe direction indicated by the arrow a, (Fig. 1) is effected by thecontinuously loaded drawback rams 5 which are exposed to the pressure of800 lbs. per square inch. The position of the trip gear 92--104 is suchthat the set screw 71 is in engagement with the lower end 69 of theexhaust valve 31 whereby to maintain said valve in open position inopposition to the action of the spring the set screw 70 being clear ofthe lower end 68 of the valve stem 30. Exhaust from the cylinder 4passes by way of the conduit 38 into the chamber 37, whence it flows byway of the non-return valve 32, chamber 40, exhaust valve 31, chamber 41and the conduits 41, 42 to the storage tank 43.

During the return stroke of the ram 1, 3 viscous fluid is allowed toflow under gravity into or is pumped by means of a pump associated witha weighted storage vessel into the cylinder 2 by way of the inlet valve10 which is maintained in open position by pressure from the conduit 16acting on the difference in areas of the piston and piston rod 13', 13,respectively, the delivery valve 11 being maintained in closed position.

rl"owards the end of the return stroke, the tappet 105 on the crosshead8 engages the tappet rod 104 and rocks the bell-crank lever 98, 99 onits pivot 100 whereby to retract the spring-urged detent 97 from lockingengagement with the shaft 92, whereupon said shaft 'is displaced endwiseand the lever72, 73, 74

is rocked on its pivot 75 under the action of the counterweight 89.lTheset screw 71 is disengaged from the end 69 of the valvestem 31whereby the valvev 31 is closed under the action of the spring 65. Theset screw 70 engages the end 68 of the valve stem 30 and opens the valve30 in opposition to the action of the spring 64. Pressure water from thepumps B passes by way of the conduit 35, the branch 34 and the valve 30,to the chamber 40 of the valve chest 29 whence itilows by way of theconduits 55', 55 to the chamber 54 of the by-pass valve piston 53, and,Vacting on said piston, closes the by-pass valve 51 to Vprevent leakageof pressure water from the conduit 35 to the storage tank '43 by .way ofthe conduit 48, needle valve 50, by-passvalve 51 and conduit 52.` y

Pressure water also flows from the cliam- Vber 40, by WayV of theconduit 23,to the cylinders 14, 19, and acts on the full areas presentedby the pistons 13', 18. Y Vhen the water pressure in the chainbe 40attains a predetermined intensity, suiiicient to close the inlet valve10 but not to open the delivery valve 11, the valve 33 opens invopposition to the action of the spring 67 under the action of thepressure on a shoulder 10G presented by said valve 33. Pressure water isnow admitted to the cylinder 4 by way of the valve 33, chamber 37 andconduit 38. When the total resistance offered tothe opening of thedelivery valve 11 is overcome said valve opens. Y

In the forward stroke of the ram 1, 3, the viscous fluid is ejected fromthe .cylinder 2 to the receiver by wayof the delivery valve 11. The nextreturn stroke ofi'fhe ram 1, 3 is timed to commence by the continuouslyrotating cam 81 which functions to effect closure Vof the valve 3() andopeningy of the valve 31 by restoring the trip gear to position ready tobe re-tripped by the tappet 105 towards the end of said next returnstroke. y

It will be understood that, on release of the trip geai' by the detent97, the dashpot piston 95 cushions the movements of the lever 72, 73, 74under the influence of the weight 89.

What I claim is: C Y 1. An installation for .forcing viscous liquid intoa receiver, comprising a hydraulic cylinder, a cylinder for viscousliquid adj oiiied with said hydraulic cylinder, a forcing ram presentinga high pressure end working in said cylinder forviscous liquid and a lcwinto a receiver, comprising a hydraulic cylin-V der a `cylinder forviscous liquid adjoined Withsaid hydraulic cylinder, a forcing rampresenting a high pressure end working in said cylinder for viscousliquid and a low ressure end workin in said hvdraulic c 7linder, acylinder for viscous liquid adjoined Y with said hydraulic cylinder, aforcing ram presenting a high pressure end working in said cylinder forviscous liquid and a low Apressure end working in said hydraulic cylin`der, inlet and delivery valves for said cylinder for viscous liquid,hydraulicl valves controlling the passage Iof'iiuid to and from saidhydraulic cylinder, Ameans associated with said. ram for actuatingsaidhydraulic valves, means including pressure fluid connections betweensaid hydraulic valves and said inlet and delivery'valves for operatingsaid inlet and deliveryvalves, a drawback rainfor effecting tlie'returnstroke of said forcing rain, and acylinder in which said drawback rainoperates. i Y

` 4. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylin der, a cylinder for viscous liquidVadjoined with said hydraulic cylinder, a forcing ram presenting a Ahighpressure end working in said cylinder for viscous liquid and a lowpressure eiid working in said hydraulic cylinder, inlet and deliveryvalves for said cylinder for viscous liquid, a pressure valve Aand anexhaust valve controlling the passage of fluid toand from said hydrauliccylinder, means adapted to be tripped in tlic return stroke of saidforcing ram for operating said pressure Vvalve and exhaust valve, andmeans including pressure fluid connections between said last mentionedvalves and said inlet and .delivery valves for operating said inlet anddelivery valves. l

5. An installation for forcing viscous liquid intoV a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjcinedwith said hydraulic cylinder, a forcing ram presenting a .high pressureend working in said cylinder for Yviscous liquid and a Ycally actuatedmeans for operating said pressure valve and exhaust valve, and meansincluding pressure fluid connections `between said pressure and exhaustvalves and said inlet and delivery valves for operating said inlet anddelivery valves.

6. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcing ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for saidcylinder' for viscous liquid, a pressure valve and exhaust valvecontrolling` the passage of fluid to and from said hydraulic cylinder,an automatic non-return exhaust valve between said pressure valve andsaid hydraulic cylinder, mechanically actuated means for operating saidpressure valve and said first mentioned exhaust valve, and meansincluding pressure fluid connections between said pressure valve andsaid first mentioned exhaust valve and said inlet and delivery valvesfor operating said inlet and delivery valves.

7. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adioinedwith said hydraulic cylinder, a forcing ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for saidcylinder for viscous liquid, means including pressure fluid connectionsto said valves for operating said valves, valves controlling admissionof pressure fluid to said hydraulic cylinder and to pressure fluidconnections, and trip mechanism released by said ram controlling saidlast mentioned valves.

8. An installation for forcing viscous liquid into a. receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcing ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for saidcylinder for viscous liquid, mechanically operated pressure and exhaustvalves controlling the passage of fluid to and from said hydrauliccylinder, means including pressure Vluid connections between said lastmentioned valves and said inlet and delivery valves for operating saidinlet and delivery valves, a d raw-back ram for effecting the returnstroke of said forming ram, and a. cylinder in which said drawback amoperates.

9. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcing ram presentin a high pressureend working in said cylinder for viscous liquid and a low pressure endWorking in said hydraulic cylinder, inlet and delivery valves for saidcylinder for viscous liquid, hydraulic valves controlling the passage offluid to and from said hydraulic cylinder, means including pressurefluid connections between said hydraulic valves and said inlet anddelivery valves for operating said inlet and delivery valves,meansincluding trip mechanism released by said ram for controlling saidhydraulic valves, and cam means for restoring said trip mechanism toinitial position after release by said ram.

1U. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcino ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for saidcylinder for viscous liquid, hydraulic valves controlling the passage offluid to and from said hydraulic cylinder, means including pressurefluid connections between said hydraulic valves and said inlet anddelivery valves for operating said inlet and delivery valves, tripmechanism released by said ram for effecting one-way movement of saidhydraulic valves, and power means for effecting reverse movement of saidhydraulic valves.

1l. An installation for forcing viscous liqiud into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcing ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for saidcylinder for viscous liquid, hydraulic valves controlling the passage offluid to and from said hydraulic cylinder, means including pressurefluid connections between said hydraulic valves and said inlet anddelivery valves for operating said inlet and delivery valves, mechanismreleased by said ram for effecting one-way movement of said hydraulicvalves, and power means for effecting reverse movement of said hydraulicvalves and for restoring said trip mechanism to initial position afterrelease by said ram.

l2. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a cylinder for viscous liquid adjoinedwith said hydraulic cylinder, a forcing ram presenting a high pressureend working in said cylinder for viscous liquid and a low pressure endworking in said hydraulic cylinder, inlet and delivery valves for said.

cylinder for viscous liquid, a piston connected to said inlet valve, apiston connected to said delivery valve, two operating cylinders cachreceiving one of said pistons, hydraulic valves controlling the passageof fluid to and from said hydraulic cylinder, connections between saidhydraulic valves and one end of each of said operating cylinders,connections for I.

fluid under pressure taken to theopposite ends of said operatingcylinders, means including trip mechanism released by said ram foractuating said hydraulic valves, and cam means for resetting said tripmechanism t0 initial position after release by said ram.

13. An installation for forcing viscous liquid into a receiver,comprising a hydraulic cylinder, a pump, pipe connections vbetween saidpump and said hydraulic cylinder, a ley-pass valve included in saidconnections, a cylinder for viscous liquid adjoined With said hydrauliccylinder, a forcing ram presenting` a high pressure end Working in saidcylinder for viscous liquid and a low pressure end Working in saidhydraulic cylinder, inlet and delivery valves for said cylinder forviscous liquid, and fluid pressure means for operating said inlet anddelivery valves.

In testimony whereof I have signed my name to this specification.

THOMAS EDMUND HOLMES.

